Picking the right church...

We recently had a Bible study on I Peter 3.  One of the things that Peter commands the believers is to "be of one mind."  What does this mean? First let me make a couple of observations.
1) Peter's letter is addressed to churches all across Asia minor, so it seems like he is asking believers to be of one mind. 
2) People often like to say that as long as we are one in the Spirit, exactly what we believe doesn't matter. Peter is talking about something beyond being just one in the Spirit (it has to start with this), but being of one mind in its most basic form is talking about thinking the same about things.
3) It's almost laughable that we would be asked to be of one mind when one looks at the church today.  Has their ever been a more diverse group of people who claim to go under the same title.  I think many people have looked at this commandment and seen it as being so far from reality they kept right on reading and never really thought of ways to apply this scripture to our lives today.
My thoughts: God would not ask us to do something that is impossible to achieve through his grace.  When God penned the words "be of one mind," He had something in mind--a blessing that our churches are missing out on if we don't follow. 
I believe the number one reason the church is so diverse today is that people throughout the ages have congregated and split apart based on their beliefs rather than enduring the stress of discussing ideas and coming to a common belief.  Discussing beliefs and even more, changing beliefs can be one of the most delicate things.
Notice in I Peter 3 that Peter mentions about 8 things that we need to keep in mind after he commands us to be of one mind: Love each other, be tenderhearted, work towards peace, be humble, and on and on....
If we are going to become of one mind with the believers around us we need to stop picking our churches based on whether we believe the same things but perhaps based on a number of different reasons.  Observe the following:
1) Does it make sense that every Sunday Christians pass each other on the road (going in different directions) so we can all go to churches of our pleasing rather than going to a church that is in our own geographical area where God has placed us.
2) Most people have slightly polarized beliefs and most movements do too.  Why then does it make any sense to polarize ourselves even further by going through a church split of some kind.
So why can't we just get along and come together on things?  The biggest reason is that we don't have true commitment.  Imagine how long a marriage would work if any time a conflict came up the option of changing partners was a viable option.  If our churches will ever start find oneness of mind we need believers who are willing to commit to staying at a church in good times and bad, through sickness and health...
But now I'm getting into another topic.  And so I ask first of all, "How should one pick a church?"